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After a show like the Grammys, the musical crowd isn't about to wind down with tea and honey: Winners, nominees and guests at Sunday's big show -- including Lady Gaga, Nicole Kidman and Keith Urban, and Katy Perry -- hit parties in the heart of Hollywood all the way to Beverly Hills.

Publishing house EMI and Ultimate Ears by Logitech hosted a huge to-do at Milk Studios, where Kidman and Urban arrived early from the downtown L.A. ceremony. Seated at a private table in the Patron VIP, the new parents chatted up executive types, sipping water and even greeting star-struck partygoers.

While several food trucks and bars kept guests satiated in the presence of the star couple, Perry walked through sans husband Russell Brand.

Donning her Armani gown from the carpet, minus the long train, Perry held court at a table with friends including stylist Johnny Wujeck.

Major trophy snatchers Lady Antebellum were well received by all, as were Natasha Bedingfield, Dave Navarro and Nikki Sixx.

Over at the L'Ermitage, where Interscope Records took over the small but pricey rooftop, Gaga made an appearance (one partygoer telling the Ministry that she wore "a bra, basically") with her boyfriend Luc Carl.

Beyonce and Jay-Z ended their night at SoHo House, where the rapper had hosted a fabulous brunch with Gucci the day before, for a Grey Goose hosted VIP reception.